Uses humor in both text and illustrations to describe what it would be like to live without clean water and describes how people access water and the importance of making sure that water is not polluted or wasted.

"How would you know what time it was without clocks? How would you buy things without money? It's hard to imagine what life would be like today without the inventions and discoveries that we take for granted, from the humble bar of soap to the fantastic complexity of the Internet. Combining history with science, this series explains how these products of human ingenuity have transformed our world" -- Provided by publisher.